Supernova Airstream HBM Handlebar Mount – 31.8 mm
The Supernova Airstream HBM (R-UHM31,8-QR-BLK) is a hinged aluminium handlebar mount for ø 31.8 mm bars. It fits without taking the cockpit apart, mounts left or right of the stem and comes with the Airstream quick-release adapter.
Why the Airstream HBM?
Hinged clamp. Opens for fitting, so grips, levers and shifters can stay where they are. 
Left or right of the stem. Place the light where your cockpit has room – next to a bag, bell or computer. 
Quick-release adapter included. Take the Airstream off in seconds when you park; the Allen key for conversion is in the box. 
Machined aluminium. Anodized matte black aluminium that holds the light firmly, so the beam stays where you aimed it.
What comes in the box
Handlebar mount, Airstream quick-release adapter and the Allen key needed for conversion.
A light is only as good as its mount: a slipping bracket means a beam pointing the wrong way. The HBM clamps solidly to an oversized bar.
Who is it for?
- Airstream owners with 31.8 mm bars. A solid, adjustable alternative to the standard mount.
- Busy cockpits. Bags, bells and computers – the light can sit to one side.
- City riders. Lock the bike and take the light with you.
Specifications
| Model | Supernova Airstream HBM (R-UHM31,8-QR-BLK) |
|---|---|
| Handlebar diameter | ø 31.8 mm |
| Mounting | Hinged clamp, left or right of the stem |
| Material | Aluminium, anodized, matte black |
| In the box | Handlebar mount, Airstream quick-release adapter, Allen key |
| Works with | Supernova Airstream / Airstream 2 |
| Guarantee | 5 years |
Frequently asked questions
Do I need to remove my grips to fit the Airstream HBM?
No. The clamp is hinged and opens for fitting.
My handlebar is 35 mm – does it fit?
This version is for ø 31.8 mm. Supernova also makes a 35 mm version – contact us and we will order it for you.
Is the quick-release adapter included?
Yes, together with the Allen key needed for conversion.
Bought from BoodaBike. We ride and fit Supernova lights on our own belt-drive and hub-gear bikes. Not sure which light, mount or tail light fits your bike? Send us a photo and we will tell you what you need. Supernova was founded in Germany in 1997. It started with a headlight its founder built for his own night training rides – after around 20,000 kilometres of riding in the dark, the company was born. Supernova lights are developed in Germany, and its top models are produced in Gundelfingen near Freiburg. The brand builds machined aluminium housings and lenses that put the light where you need it, and backs its lighting systems with a 5-year guarantee and at least 10 years of repairability.About Supernova